期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 4, 期 41, 页码 16094-16100出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ta07616e
关键词
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资金
- National Natural Science Foundation of China [21276087]
- Outstanding Doctoral Dissertation Cultivation Plan of Action [PY2015040]
In this work, porous carbon spheres with hierarchical pores (denoted as hCSs) were fabricated via a sol-gel process using a surfactant-directing assembly strategy and investigated as capacitive deionization (CDI) electrode materials for the first time. By using transmission electron microscopy and N-2 adsorption/desorption analyses, a hierarchy of micropores and mesopores was demonstrated to be present in the hCSs. Based on the results of CDI measurements, the hCSs obtained at 800 degrees C (hCSs-800) displayed the best electrosorption performance of all the hCS samples tested: hCSs-800 exhibited a high electrosorption capacity of 15.8 mg g(-1) when the initial NaCl concentration was 500 mg L-1. Furthermore, according to a Kim-Yoon plot analysis, hCSs-800 integrated the merits of both a high electrosorption capacity and fast electrosorption rate, indicating the superiority of these hCSs for CDI applications.
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